JUKI MO-644D 2/3/4 Thread Overlock Serger with Differential Feed and Built-in Rolled Hem

Bring professional-quality finishes into your sewing space with the JUKI MO-644D, a reliable and efficient serger designed for home sewists who want durable, stylish seams without the bulk or complexity of industrial machines. Whether you're just starting your sewing journey or are an experienced maker, the MO-644D is your gateway to fast, precise serging.

This versatile 2-needle, 2/3/4-thread overlock machine offers essential features like differential feed, automatic rolled hemming, and color-coded threading—packed into a compact and affordable model. Designed with both simplicity and durability in mind, the MO-644D gives you the freedom to work confidently on everything from delicate silks to stretchy knits and heavy denim.

Key Features of the JUKI MO-644D:

• 2/3/4 Thread Capability: Seam, trim, and overcast in one step with your choice of 2, 3, or 4-thread configurations. Ideal for garment construction, hemming, decorative edges, and tailoring.

• Built-In Rolled Hemming: Achieve delicate, professional rolled hems with the flick of a switch. No need to change the needle plate or foot—simply flip and roll.

• Differential Feed: Easily adjust fabric movement to prevent puckering or stretching. With a feed ratio from 0.7 to 2.0, this feature is also great for gathering and creating ruffled or lettuce-edge effects on knits and lightweight fabrics.

• Color-Coded Threading: Eliminate guesswork with clearly marked, color-coded thread guides. Threading is made easy—even for beginners—so you can spend less time setting up and more time sewing.

• One-Rotation Tension Dials: Achieve consistent, balanced tension with precision dials that make fine-tuning simple. Highlighted “normal” ranges help you get started quickly and accurately.

• Heavy-Duty Knife System: A dedicated knife drive ensures clean, powerful cuts across various fabric types. Whether you’re trimming sheer materials or multiple layers, the MO-644D keeps edges neat and tidy.

• Multi-Function Presser Foot: The standard foot handles most tasks—from standard overlocking to attaching elastic, ribbons, tape, or decorative trims. Snap-on design allows for quick changes with optional JUKI specialty presser feet.

• Built-In Seam Guide: Take the guesswork out of seam allowances using the integrated gauge located on the guard cover—ensuring precise, even stitching every time.

• Bright Workspace Lighting: Illuminate your fabric and needle area with built-in lighting that makes detail work easier and reduces eye strain.

• Adjustable Stitch Length & Cutting Width: Customize your serging with intuitive dials. Easily modify stitch length or knife position for a tailored seam finish or specialty effects.

• Compact and Travel-Friendly: Lightweight and space-efficient, the MO-644D is ideal for classrooms, sewing groups, or personal studios.

Specifications:

• Max Sewing Speed: 1,500 stitches per minute

• Threads Supported: 2 / 3 / 4

• Needle System: Household (HAx1) #11–14

• Stitch Length: Up to 4mm

• Presser Foot Lift: 5mm

• Differential Feed Ratio: 0.7 – 2.0

• Maximum Overlock Width: 6mm

• Tension System: Industrial-style, one-rotation dials

• Lighting: Built-in bulb

• Dimensions: 10.6" (W) x 13.5" (H) x 11.5" (D)

• Machine Weight: 15 lbs

Included Accessories:

• Standard Presser Foot

• Screwdriver

• Spool Caps

• Oiler

• Thread Nets

• Vinyl Cover

• Pack of Needles

• Tweezers

• Brush and Needle Inserter

• Looper Threader

• Accessory Pouch

• Instruction Manual

• Light Bulb

• Foot Control

• Power Cord

Optional Accessories:

Expand your machine’s functionality with specialty presser feet or curated kits:

• Blind Stitch Presser Foot

• Elasticator Foot

• Beading Foot (Straight or Curved)

• Piping, Cording, and Gathering Feet

MO-600 Series Presser Foot Kits:

• 3-Foot Kit: Elasticator, Blind Stitch, Cording

• 6-Foot Kit: Adds Piping, Beading, Gathering

• 8-Foot Kit: Includes all above plus Curve Pearl and Blind Hem/Guide

Whether you're finishing seams on stretch knits, creating formalwear hems, or adding decorative flair to your latest project, the JUKI MO-644D delivers speed, control, and beautifully clean results. It’s the perfect tool for elevating your sewing practice—built with the quality and craftsmanship JUKI is known for.